Upgrade Graffiti 3.0

I have Graffiti 3.0 and Vegas 5. Got so confused trying to use Graffiti I gave up. Now, I have some time to learn it and plan to get some instructional DVD's and/or books. What is the latest upgrade number for Graffiti and is it a free upgrade?

I don't mean to be rude, but this is something that can be easily checked by going to the Borisfx website.... It took me seconds to find that the latest update is Graffiti 4. You can purchase the upgrade for 299$ usd.
Here is a link: http://stores.yahoo.com/artel-software/borisgraffiti1.html